Patterned color filter substrate and LCD utilizing the same

a color filter substrate and substrate technology, applied in the field of liquid crystal display, can solve problems such as lack of a method of regulation

Active Publication Date: 2011-02-22
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no method existed to regulate distribution thereof, so use of a patterned photoresist layer as a spacer became popular.

Method used

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  • Patterned color filter substrate and LCD utilizing the same
  • Patterned color filter substrate and LCD utilizing the same
  • Patterned color filter substrate and LCD utilizing the same

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Embodiment Construction

[0016]The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.

[0017]FIGS. 2A-2C show a manufacture of a color filter substrate in an embodiment of the invention. First, a red color filter 20R is formed on a substrate 21. The formation may utilize a photoresist containing red pigment spun on the substrate 21. In an embodiment, the substrate 21 can be plastic, resin, glass, or the like. The color filter 20R is then patterned by lithography, for example. As shown in FIG. 2B, a green color filter 20G is formed on the substrate 21. The composition and the formation of the color filter 20G are similar to color filter 20R. Similarly, a blue color filter 20B is then formed on the substrate 21 in FIG. 2C. As shown in FIG. 2C, part of the ...

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PUM

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Abstract

An LCD including a color filter substrate, an array substrate, and a liquid crystal layer therebetween is provided. This color filter substrate has a plurality of color filters with overlap regions acting as a black matrix. Subsequently, patterned regions are defined in part of the overlap regions. After formation of a planarization layer and a conductive layer, spacers are formed in the patterned regions. The spacers may not shield the transparent region of the color filters, thereby enhancing the aperture ratio of the color filter substrate. Additionally, the thickness of the planarization layer in the patterned regions is not influenced by the overlap of the color filters, such that the spacers thereon have a uniform height. Furthermore, the at least one spacer of the color filter substrate and at least one data line of the array substrate are overlapped.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a Continuation of pending U.S. patent application Ser. No. 11 / 759,329, filed Jun. 7, 2007, and entitled “Color Filter Substrate And LCD Utilizing The Same”, which claims priority of Taiwan Patent Application No. 095144656, filed on Dec. 1, 2006, the entirety of which is incorporated by reference herein.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to a liquid crystal display (LCD), and in particular to a color filter substrate thereof.[0004]2. Description of the Related Art[0005]Conventional LCDs comprise a color filter substrate, an array substrate, and a liquid crystal layer disposed therebetween. Formerly, the distance between the substrates was defined by ball spacers. However, no method existed to regulate distribution thereof, so use of a patterned photoresist layer as a spacer became popular.[0006]Conventional large color filter substrates include black matrices between di...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): G02F1/1335G02F1/1339
CPCG02B5/201G02F1/13394G02F1/133514
InventorCHENG, CHING-SHENGHU, CHIH-JEN
OwnerAU OPTRONICS CORP